8791489 has 4 divisors (see below), whose sum is σ = 10047424. Its totient is φ = 7535556.

The previous prime is 8791487. The next prime is 8791493. The reversal of 8791489 is 9841978.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8791489 - 2¹ = 8791487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8791487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627957 + ... + 627970.

It is an arithmetic number, because the mean of its divisors is an integer number (2511856).

Almost surely, 2^8791489 is an apocalyptic number.

It is an amenable number.

8791489 is a deficient number, since it is larger than the sum of its proper divisors (1255935).

8791489 is a wasteful number, since it uses less digits than its factorization.

8791489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1255934.

The product of its digits is 145152, while the sum is 46.

The square root of 8791489 is about 2965.0445190587. The cubic root of 8791489 is about 206.3894430156.

The spelling of 8791489 in words is "eight million, seven hundred ninety-one thousand, four hundred eighty-nine".